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Proceedings Paper

Contiguous fiber Bragg grating arrays produced on-line during fiber draw
Author(s): Charles G. Askins; Martin A. Putnam; Glen M. Williams; E. Joseph Friebele
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Paper Abstract

Arrays of fiber Bragg gratings (FBGs) have been produced on-line during fiber draw using a KrF excimer laser and a computer-controlled interferometer. A table of the desired Bragg wavelengths (lambda) B of the gratings is used by the computer to appropriately vary the intersection angle of the two interfering beams, maintain focus and beam intersection at the proper position relative to the fiber, and trigger the laser. A large number of narrow-line Type I gratings have been produced, and in some instances small Type II gratings have been found to overlap the Type I FBGs. The reflectance of the gratings in one series was found to be polarization-dependent, lending further support to our previous model whereby the index change induced by the excimer laser occurs at the core-clad interface asymmetrically on one side of the core.

Paper Details

Date Published: 1 May 1994
PDF: 6 pages
Proc. SPIE 2191, Smart Structures and Materials 1994: Smart Sensing, Processing, and Instrumentation, (1 May 1994); doi: 10.1117/12.173989
Show Author Affiliations
Charles G. Askins, Naval Research Lab. (United States)
Martin A. Putnam, Naval Research Lab. (United States)
Glen M. Williams, Virginia Polytechnic Institute and State Univ. (United States)
E. Joseph Friebele, Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 2191:
Smart Structures and Materials 1994: Smart Sensing, Processing, and Instrumentation
James S. Sirkis, Editor(s)

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